Description of problem:
Custom partioning error...

Version-Release number of selected component:
anaconda-19.30.13-1.fc19.x86_64

The following was filed automatically by anaconda:
anaconda 19.30.13-1 exception report
Traceback (most recent call first):
  File "/usr/lib/python2.7/site-packages/blivet/formats/fs.py", line 207, in _setTargetSize
    raise ValueError("invalid target size request")
  File "/usr/lib/python2.7/site-packages/blivet/deviceaction.py", line 589, in __init__
    self.device.format.targetSize = newsize
  File "/usr/lib/python2.7/site-packages/blivet/__init__.py", line 1211, in resizeDevice
    self.devicetree.registerAction(action_class(device, new_size))
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/custom.py", line 1399, in _save_right_side
    self.__storage.resizeDevice(device, size)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/custom.py", line 2363, in _save_current_selector
    self._save_right_side(self._current_selector)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/custom.py", line 2374, in on_selector_clicked
    self._save_current_selector()
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/lib/accordion.py", line 218, in _onSelectorClicked
    cb(selector)
ValueError: invalid target size request

Additional info:
cmdline:        /usr/bin/python  /sbin/anaconda --liveinst --method=livecd:///dev/mapper/live-osimg-min --lang en_US.UTF-8
cmdline_file:   initrd=initrd0.img root=UUID=8284-86DD rootfstype=vfat ro rd.live.image quiet rhgb rd.luks=0 rd.md=0 rd.dm=0 BOOT_IMAGE=vmlinuz0 
executable:     /sbin/anaconda
hashmarkername: anaconda
kernel:         3.9.5-301.fc19.x86_64
other involved packages: python-blivet-0.17-1.fc19.noarch
product:        Fedora
release:        Fedora release 19 (Schrödinger’s Cat)
type:           anaconda
version:        19